Duplicate particle emitter
To duplicate the settings just add another particle system with the +, and choose the same value from the Settings combobox (ParticleSettings in your case). Note: the Seed value is not copied and will reset to 0 for some reason.
To change the name of the particle system or the settings just double-click the name and you can edit it. Note: Once you have edited the hair (Comb mode), all values become read-only, including the name of the settings.

Hair particle settngs, Blender 2.9x